Originally Posted by taibanl
Excuse my ignorance. Why should hi level input sound better? I am aware there is some overlap in the voltage ranges.
Sounds better in the sense that the iDrive volume level seems to me and to the customer to correspond better to the level of sound coming from the speakers than setting it to low. Like somehow the 6V balanced inputs are really 6V inputs and needed to be attenuated somehow to match the amps.
For example, the BT phone volume at input set to low is considerably higher than the music level, even when the BT volume is set to the minimum. Then by setting it to high it is pretty much at the same volume level.
Again, this could be an issue with just one particular HD amp. That's what I am trying to find out in this particular case.
-2015 F30 320i, Imperial/Oyster, 8AT, ED
-2012 E92 M3 Jerez Black/Rust Brown, M-DCT, ED: Gone
-2008 E90 M3 Melbourne Red/Bamboo, 6MT: Gone
-2007 MK5 GTI United Grey/Grey, DSG: Gone
-2004 E46 M3 Carbon Black/Cinnamon, 6MT: Gone